Month: June 2021

Fatigue Testing of Materials and Products

Kartik Srinivas Materials Engineering and FEA

AdvanSES offers Fatigue Testing of Materials and Products using a variety of stress and strain controlled testing machines for characterizing field service behaviors of engineering products, medical devices, and automotive aerospace components.

Fatigue testing involves the application of cyclic loading to a test specimen or a product. Unlike monotonic tests in which loading increases until failure, the applied load is cycled between prescribed maximum and minimum levels until a fatigue failure occurs, or until the predetermined number of loading cycles have been applied.

The loading is applied to assess long term fatigue behavior, vibration isolation properties, and observe failure causing mechanisms.

Figure 1: Fatigue and Static Testing Systems at AdvanSES

AdvanSES offers Fatigue Testing of Materials and Products for;

1) Material Samples
2) Full Scale Component Level Testing
3) Measure Material and Product Degradation
4) Elevated Temperature Testing
5) Incorporation of Aging Mechanisms in Testing

Benefits of Fatigue Testing at AdvanSES

With material and product testing at AdvanSES, you can be sure of:

  1. ISO 17025:2017 Accredited Facility
  2. Knowledgable Testing and Engineering Personnel
  3. Commitment to Understanding your Materials and Products
  4. Identify root cause if Required
  5. Short Timelines
  6. Detailed Testing Reports that Help You Make Accurate Decisions

AdvanSES Fatigue Testing Procedure

The AdvanSES approach to fatigue testing of materials and products is as follows;

  • The machine, environment chamber, extensometer, loadcell etc., are all calibrated and verified.
  • The test samples or products to be tested are prepared.
  • The test parameters are set, environment chamber is placed and the test environment is brought upto the required parameters.
  • The machine is started and runs the set cyclic load, stress, strain ranges according to the parameters predetermined for the test samples.
  • The test is run for the set number of cycles and periodically checked, photographed for signs of degradation, fatigue or until failure.
  • Results and further engineering steps are discussed.
  • All relevant test data with information is reported.

Materials Testing Laboratory

Kartik Srinivas Materials Engineering and FEA

Materials Testing Laboratory Services

Materials Testing Laboratory at AdvanSES uses highly precise, repeatable and reliable techniques that quantify and measure quality control and performance characteristics of materials, such as mechanical properties, design properties and durability properties

Our material testing laboratory is ISO 17025:2017 accredited and equipped to age, test and analyze materials for a wide-range of industries and applications. We can perform testing as per ASTM, ISO standards and also as per your specified criteria. Our test data and results help design engineers make better designs. Our test data help scientists and engineers determine whether materials, products and aging criteria meet the requirements of design engineers, quality control department and whether they products and materials are suitable for their intended applications.

We can mold, machine and creat test specimens and samples for efficient turnaround. We can also mold and manufacture these test specimens for your own in-house material testing.

ALL ABOUT QUALITY

AdvanSES material testing laboratory is ISO 17025:2017 accredited. Any kind of samples can be tested at our laboratory using the latest techniques. We can mould specimens, extract samples from failed or in field service products, age and make any kind of samples for your testing convenience.

AdvanSES provides answers to your material questions that meet your quality requirements:

  • Accredited by NABL ISO/IEC 17025.
  • Testing performed to ASTM, ASME, ISO standards and customer specifications.
  • Quality system complies with ISO 9001.

Material testing services at AdvanSES provides you with valuable insights and answers about:

  • Characterisitics of materials and products
  • Mechanical properties
  • Finite element analysis
  • Durability of your mateirals and products.
  • Vulnerability to fatigue failures

EXPERT FINITE ELEMENT ANALYSIS (FEA) SERVICES

Kartik Srinivas Materials Engineering and FEA

FEA CONSULTING SERVICES COMPANY

Advanced Scientific and Engineering Services (AdvanSES) delivers Expert Finite Element Analysis FEA services to assist design engineers, quality control personnel, and manufacturers in developing innovative products and solving their design, development and structural challenges. We provide optimized engineering designs, and resolve multi-disciplinary failure analysis problems.

Design Development and FEA Studies

Our  Expert Finite Element Analysis (FEA) services engineers are committed to your deadlines and bringing your products faster to the market. We take your product specifications like load, displacement, fatigue life requirements and convert them to products that perform within the design specifications.

A finite element analysis is only as good as the accuracy of the material properties, boundary conditions, geometry representation and loading conditions. Our verification checks and validations include mesh convergence analysis, design constraint check, load path checks and validations with testing.

Backed by Laboratory Testing and Domain Experts

Finite element analysis FEA simulations of parts and components is validated with our laboratory testing. This methodology provides a robust and thorough verification and validation of your product development and analysis process and it provides you with real world data of your products performance envelope. Mechanical testing of materials is used to provide a complete 360 degree view of the material performance.

Proven Performance and Quality

AdvanSES’ long history of services, benchmark performance, and consistent quality is the result of an unwavering commitment to scientific and engineering excellence. AdvanSES customers around the world, from design engineers to manufacturers enjoy complete confidence in the proven performance of our laboratory and professional services. We are an ISO 17025:2017 accredited material testing laboratory with commitment to quality, and customer service excellence.

Mechanical Testing of 3D Printed Parts and Materials

Kartik Srinivas Materials Engineering and FEA , , ,

A New Approach to Product Development & Rapid Prototyping

The procedure of manufacturing objects by depositing successive layers upon layers of material, based on 3D digital CAD models, is called Additive Manufacturing (AM) or simply 3D-printing. Fused Deposition Modeling (FDM) technology is one of the most widely used technique in additive manufacturing. A range of other manufacturing materials can be used for 3D printing that include nylon, glass-filled polyamide, epoxy resins, wax, and photopolymers. FDM-based polymer product manufacturing has increased in recent times due to the flexibility it offers in the production of polymer and fibre-based composite parts. FDM-based polymers have the potential to be used in all applications, currently they are primarily used in automotive, aerospace and biomedical applications.

Additive Manufacturing involves a series of processes, from ideation and design development to final product manufacturing using a specialized printer. The different steps depend on the type of manufacturing method and the material type. The primary processes and steps involved are however mostly common and remain the same for different types of manufacturing applications. The steps involved in an AM process are as shown below;

3D Printing Process

Fused Deposition Modeling (FDM)

FDM is the method of choice for manufacturing of 3d printed polymer parts and components due to its simple process, low economic cost and predictable material properties. FDM is already used in the material extrusion manufacturing process for various thermoplastic polymers. Some common thermoplastic filaments used in FDM are acrylonitrile butadiene styrene (ABS), polypropylene (PP), polylactide (PLA), polyamides (PA) like Nylon, polyether-ether-ketone (PEEK) etc. The FDM process consists of the polymer being extruded and deposited in a successive layer by layer method. FDM manufactured polymer parts and components exhibit good mechanical properties, surface finish, and manufacturability. The matrix material used in the FDM process is in the form of a 1.75mm to 2.85 mm filament wound on a spool. The filament is fed into the printer head where it is heated and melted above its glass transition temperature (Tg). The plastic melt is then passed to the nozzle and deposited layer by layer.

FDM of Fibre-Reinforced Polymers


The strength of polymeric materials can be significantly improved through reinforcement by fibres. Fibre-reinforced polymers manufactured using 3d printing technique is gaining traction. Fibre-matrix interaction and porosity are important considerations to be addressed in 3d printing of polymeric composites. FDM is currently the most preferred method for the production of polymeric fiber composites due to its material flexibility, and consistent properties.

Although the 3d printing additive manufacturing method is a sophisticated process for producing materials, and readily usable components and parts, the field service material behaviour of these printed parts is highly complicated. These properties are influenced by several process parameters such as filament material, temperature, printing speed. The material behaviour is highly anisotropic and is governed by the microstructure produced while depositing the layers and the ambient environment. The resulting material behaviour can be described using stress–strain relationships and is critical in the Finite element analysis and stress analysis of models. AdvanSES has full capability to test these complex materials and their behaviours using an array ot techniques. Mechanical testing of 3D printed parts and materials is now a key part of our portfolio of services

Mechanical Testing of 3D Printed Parts and Materials generally involves the following tests:

  1. Uniaxial tension tests
  2. Flexure tests
  3. Compression tests
  4. Poisson’s ration tests
  5. Axial Fatigue tests.